虽然夏至和冬至分别代表了太阳光线强度在夏季和冬季的顶峰，他们却并不代表最热的或最冷的日子。
Although the solstices represent the pinnacles of summer and winter with respect to the intensity of the sun's rays, they do not represent the warmest or coldest days.
这两天就分别叫做夏至和冬至。
These two days be called the summer solstice respectively with solstice.
时间的始末和中心，冬至夏至的转变，和季节的变更。
The beginning, and ending, and midst of the times, the alterations of their courses, and the changes of seasons.
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